Charles hall



(No Model.)

0. HALL.

, PIPE WRENCH.

No. 533,295. Patented Jan. 29, 1895..

llNrTEo STATES PATENT UEETQE.

. cI-IARLEs HALL, on NEW YORK, N. Y.

PIPE-WRENCH.

SPECIFICATION forming part of Letters Patent No. 533,295, dated January29, 1895.

Application filed July 23,1894. Serial No. 518,382. (No model.)

To all whom it may concern.-

Be it known that I, CHARLES HALL, a citizen of the United States,residing in the city, county, and State of New York, have invented anImprovement in Pipe-Wrenches, of which the following is a specification.

In Letters Patent No. 516,485, granted to me March 13, 1894, there is awrench containing a hook-shaped jaw and also a jaw at the end of thelever handle, the pivot of the hookshaped jaw forminga nut that isadjusted by a screw within a slot, and in my Patent No. 521,312, theinner surface of the hook-shaped jaw sets back from the line of theadjacent side of the handle jaw,so as to give more space for thereception of a large size pipe.

I find that the principal wear in using this pipe wrench comes upon theangle at the edge of the jaw and the end of the lever handle, and thatit is advantageous to grind the jaw so as to keep this edge sufiicientlysharp, and in addition to the foregoing features I find that when theaforesaid wrench is made use of for turning a nut or a bolt, it isadvantageous to have the point of the jaw at the end of the lever handleproject so as to be adapted to pass down into a recess or between oneprojection and another in grasping the nut or bolt that is to be turned.

In order to adapt my aforesaid wrench to the various uses desired, Imake the jaw at the end of the lever handle removable so that it may beground from time to time to keep its edge sufliciently sharp and also toallow for the removal of one jaw and the substitution of another in caseof prolonged wear or breakage, and the acute-angled edge of the jaw atthe end of the lever handle is set back from the line of the side ofsuch lever handle so as to be distant from the inner side of theadjacent hook and facilitate the use of the wrench with a large sizedpipe, and this jaw at its opposite edge projects beyond the side of thelever handle so as to be adapted to the grasping of a bolt head, nut orsimilar polygonal article, thus more fully adapting my improved pipewrench to the ordinary uses of a monkey wrench.

In the drawings, Figure 1 is a side view of my improved wrench with aportion of the handle broken off. Fig. 2 is a view of the base of theremovable jaw detached, and Fig. 3 is an end view of the wrench with theremovable jaw detached and with the swinging jaw in section at the linea; m of Fig. 1.

The handle A is slotted longitudinally for the reception of the screw Dwhich passes through the pivot G of the swinging hookshaped jaw F, suchpivot O forming a nut to the screw D, and the swinging hook-shaped jaw Eis made with two strap portions 6 that pass one at each side of thelever handle A atits slotted portion, and the edge or side 10 of thelever handle A is in line with the edge or side 11 of the swinging hookE when the parts stop one against the other, as seen in Fig. 1, but thechisel-shaped edge 12 of the jaw K is not adjacent to the side 11 butsufficiently distant therefrom to aid in adapting the wrench to thereception of large sized pipes, and the jaw K is made of aseparate piecefrom the lever handle so that it may be of hardened steel, and the partsslip together transversely with dovetailed interlocks that are slightlytapering, so that the jaw K can be firmly connected with the end of thelever handle by being driven on transversely, or it may be sepa rated bydriving it in the opposite direction; and by making the dovetailedinterlocks in the manner represented, the block 15 at the end of thelever handle A over which the dovetailed portions of the jaw pass,firmly supports the jaw while in use, and the end 14 of such jawprojects sufficiently beyond the edge of the leverhandle to allow theend of the jaw to pass in between nuts or other articles that may beadjacent to the nut or bolt to be turned by the action ofthe wrench,thus greatly facilitating the use of this pipe wrench upon polygonalarticles.

It will-be observed that the hook-shaped end 5 of the swinging jaw E isalso reduced in width so as to be adapted to use the same as an ordinarywrench.-

The bearing blocks F may be provided for the end of the screw D, as inmy aforesaid patent.

I claim as my invention 1. The combination in a wrench, of a leverhandle a separate jaw at the end of the lever handle having a flat facestanding at an acute angle to the lever handle and with a chisel edge atone end and the other end projecting beyond the side of the lever handleand recessed centrally and transversely upon its under surface toreceive a dovetailed projection at the end of the lever handle, aswinging hook shaped jaw, and a screw for adjusting the swinging hook inrelation to the lever handle, substantially as set' forth.

2. The combination in a wrench, of a lever handle a separate jaw at theend of the lever handle having a flat face-standing at an acute angle tothe lever handle and with a chisel 20 a mortise in thelever handle andacting upon the pivot nut C, substantially as set forth.

3. The combination in a wrench, of alever handle having a flat face atthe end forming an acute angle with the lever handle, a chisel edge atone end of the jaw, off-set from that side of the lever handle, and theother end of the jaw projecting beyond the side of the lever handle, aswinging hook having a fiat jaw face that is parallel to the face of thejaw at the end of the lever handle when the swinging jaw is stoppedagainst the side of the lever handle, straps upon the swinging jawpassing at each side of the lever handle, a pivot pin passing throughsuch straps and forming a nut and a screw acting upon said nut andwithin a longitudinal mortise in the lever handle, substantially as setforth.

Signed by me this 18th day of July, 1894,.

CHAS. HALL.

Witnesses:

GEO. T. PINoKNEY, A. M. OLIVER.

